<template>
  <view>
    <view class="goods-item">
      <!-- 商品左侧区域 -->
      <view class="goods-item-left">
        <radio :checked="item.goods_state" color="#c00000" v-if="showRadio" @click="radioClickHandler"></radio>
        <image :src="item.goods_small_logo || defaultPic" mode="" class="goods-pic"></image>
      </view>
      <!-- 商品右侧区域 -->
      <view class="goods-item-right">
        <!-- 商品标题 -->
        <view class="goods-name">{{item.goods_name}}</view>
        <view class="goods-info-box">
          <!-- 商品价格  | 是管道符-->
          <view class="goods-price">{{item.goods_price | tofixed}}</view>
          <uni-number-box :min="0" :value="item.goods_count" v-if="showNum" @change="numChangeHandler"></uni-number-box>
        </view>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    //定义props属性，用来接收外界传递到当前组建的数据
    props: {
      //商品信息对象
      item: {
        type: Object,
        default: {},
      },
      showRadio: {
        type: Boolean,
        //默认情况下不显示radio
        default: false
      },
      //是否展示右侧showbox组件
      showNum:{
        type:Boolean,
        default:false
      }
    },
    name: "my-goods",
    data() {
      return {
        // 默认的空图片
        defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png',
      };
    },
    filters: {
      //把数字处理为带两位小数点的数字  Number转换成数字
      tofixed(num) {
        return Number(num).toFixed(2)
      }
    },
    methods: {
      radioClickHandler() {
        // 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
        // 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
        this.$emit('radio-change', {
          goods_id: this.item.goods_id,
          goods_state: !this.item.goods_state
        })
      },
      numChangeHandler(Val){
        console.log(Val)
        this.$emit('num-change',{
          goods_id:this.item.goods_id,
          //+Val可以保证val是数字
          goods_count: +Val
        })
        
      }
    }
  }
</script>

<style lang="scss">
  .goods-item {
    display: flex;
    padding: 10px 5px;
    border-bottom: 1px solid #f0f0f0;

    .goods-item-left {
      margin-right: 5px;
      display: flex;
      justify-content: space-between;
      align-items: center;

      .goods-pic {
        width: 100px;
        height: 100px;
        display: block;
      }
    }

    .goods-item-right {
      display: flex;
      flex-direction: column;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
      }

      .goods-info-box {
        display: flex;
        justify-content: space-between;
        align-items: center;
        .goods-price {
          font-size: 16px;
          color: #c00000;
        }
      }
    }
  }
</style>
